Causing digestive problems
Our cat was on this for a few months. Whilst he loved it, it has caused him digestive problems and a lot discomfort. His poos became runny, extremely pungent and toxic (he'd deposit them in the middle of our small gaden to tell us of his suffering and the grass was "burned" by it and still shows the marks).
The moment we stopped giving him this food and moved him to sensitive wet food (but still on renal dry food), he started doing solid poos, is much happier and looks healthier.